# Chemistry

Calculate the molar solubility of Cr(OH)3 in a solution with a PH of 11.6 knowing that the Ksp(Cr(OH)3)=6.7×10^-31.

1. 👍 0
2. 👎 0
3. 👁 149
1. pH+pOH=14

14-pH=pOH

pOH=14-11.6=2.4

pOH=-log[OH^-]

[OH^-]=10^-[2.4]

[OH^-]=3.98 x 10^-3 M= initial concentration

Cr(OH)3 -------> Cr^3+ + 3OH^-

Ksp=[x][3.98 x 10^-3 M]^3

Ksp/[3.98 x 10^-3 M]^3=x

x=6.7×10^-31/[3.98 x 10^-3 M]^3

Solve for x

1. 👍 1
2. 👎 0

## Similar Questions

1. ### Chemistry

The solubility of insoluble substances changes depending on the nature of the solution. Below are two solutions in which Cu(OH)2 is dissolved; in each case, the solubility of Cu(OH)2 in those solutions is not the same as it is in

asked by Henry on February 19, 2015
2. ### Chemistry

(Ksp= 5.0*10^-13) 1) Calculate the molar solubility of AgBr in 3.0×10^−2 M AgNO3 solution. 2) calculate the molar solubility of AgBr in 0.10 M NaBr solution. I tried solving using this the quadratic formula, but it didn't work.

asked by Jonah on March 17, 2013
3. ### Chem

(a) The molar solubility of Ag2CrO4(s) at 35°C is 1.3 10-4 mol/L. Calculate Ksp. (b) If 0.0490 g of AgIO3 dissolves per liter of solution, calculate the solubility-product constant. (c) Using the appropriate Ksp value from

asked by Rebekah on April 27, 2011
4. ### High school AP chem

The solubility of Mn(OH)2 is 3.04 x 10^-4 gram per 100 ml of solution . A) write the balanced chem equation for Mn(OH)2 in aqueous solution B) calculate the molar solubility of Mn(OH)2 at 25 degrees celcius C) calculate the value

asked by Chem review question on April 1, 2014
5. ### Chemistry !

The solubility of Mn(OH)2 is 3.04 x 10^-4 gram per 100 ml of solution . A) write the balanced chem equation for Mn(OH)2 in aqueous solution B) calculate the molar solubility of Mn(OH)2 at 25 degrees celcius C) calculate the value

asked by Vee on April 1, 2014
6. ### Chem

The solubility of Mn(OH)2 is 3.04 x 10^-4 gram per 100 ml of solution . A) write the balanced chem equation for Mn(OH)2 in aqueous solution B) calculate the molar solubility of Mn(OH)2 at 25 degrees celcius C) calculate the value

asked by Bee on April 1, 2014
7. ### Chemistry

Consider the following reaction that describes the solubility equilibria of solid Zn(OH)2 in aqueous solution (Ksp of Zn(OH)2 4.0x10^-17. Calculate molar solubility of Zn(OH)s in an acidic solution of pH5.0.

asked by Jamie on April 16, 2013
8. ### Chemistry

Consider the following reaction that describes the solubility equilibria of solid Zn(OH)2 in aqueous solution (Ksp of Zn(OH)2 4.0x10^-17. Calculate molar solubility of Zn(OH)s in an acidic solution of pH5.0.

asked by Jamie on April 16, 2013
9. ### Chemistry

The solubility of insoluble substances changes depending on the nature of the solution. Below are two solutions in which copper (II) hydroxide is dissolved; in each case, the solubility is not the same as it is in pure water. a.

asked by Marina on January 3, 2016
10. ### Chemistry

Tooth enamel is made up of hydroxyapatite, Ca_10(PO_4)_6(OH)_2 or the empirical formula, Ca_5(PO_4)_3(OH). Use the empirical formula for all calculations because stoichiometry plays two significant roles. A. Print the balanced

asked by John on April 7, 2011

More Similar Questions